EP0976926A2 - Unité avec pompe et poussoir intégrés dans un système d'alimentation en carburant - Google Patents

Unité avec pompe et poussoir intégrés dans un système d'alimentation en carburant Download PDF

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Publication number
EP0976926A2
EP0976926A2 EP99305199A EP99305199A EP0976926A2 EP 0976926 A2 EP0976926 A2 EP 0976926A2 EP 99305199 A EP99305199 A EP 99305199A EP 99305199 A EP99305199 A EP 99305199A EP 0976926 A2 EP0976926 A2 EP 0976926A2
Authority
EP
European Patent Office
Prior art keywords
tappet
fuel
pump
body part
chamber
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP99305199A
Other languages
German (de)
English (en)
Other versions
EP0976926B1 (fr
EP0976926A3 (fr
Inventor
David C. Jay
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wartsila Finland Oy
Original Assignee
Wartsila NSD Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wartsila NSD Oy AB filed Critical Wartsila NSD Oy AB
Publication of EP0976926A2 publication Critical patent/EP0976926A2/fr
Publication of EP0976926A3 publication Critical patent/EP0976926A3/fr
Application granted granted Critical
Publication of EP0976926B1 publication Critical patent/EP0976926B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
    • F04B53/14—Pistons, piston-rods or piston-rod connections
    • F04B53/148—Pistons, piston-rods or piston-rod connections the piston being provided with channels which are coacting with the cylinder and are used as a distribution member for another piston-cylinder unit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/102—Mechanical drive, e.g. tappets or cams
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/442—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston means preventing fuel leakage around pump plunger, e.g. fluid barriers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0001—Fuel-injection apparatus with specially arranged lubricating system, e.g. by fuel oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2305/00—Valve arrangements comprising rollers

Definitions

  • This invention relates to fuel pumps for internal combustion engines of the type comprising an integrated pump and tappet unit.
  • the invention relates to fuel pumps for large diesel engines for use as main propulsion or auxiliary engines for ships or for power plants for production of heat and/or electricity.
  • the invention seeks to overcome these disadvantages and to provide an improved pump and tappet unit which can achieve the advantages of integration whilst avoiding the problems associated with existing integral arrangements.
  • the invention provides integrated pump and tappet units as defined in claim 1 and its subsidiary claims.
  • the body part is constructed as an integral piece and the tappet member and the piston member are connected to each other by means of a tappet arm which is sealed to a flange member fixed to the body part so that fuel from the fuel chamber is prevented from entering the portion of the body housing the tappet.
  • a tappet arm which is sealed to a flange member fixed to the body part so that fuel from the fuel chamber is prevented from entering the portion of the body housing the tappet.
  • the flange member is desirably provided with a duct for supplying lubrication oil to a lubricator groove adjacent the tappet arm.
  • a sealing ring located between the lubricator groove and the fuel chamber, mixing of fuel and lubrication oil may be prevented.
  • the body part may further include a chamber located between the flange member and the piston member for collecting any fuel leaked from the fuel chamber, as well as a drain duct for draining such fuel. In such an arrangement, the chamber remains de-pressurized, which is of advantage in assisting the efficient operation of the seal.
  • the fuel chamber is fed with fuel from a low pressure fuel line of a fuel feed system, via a non-return valve.
  • the low pressure fuel line is provided with a control valve upstream of the non-return valve.
  • the fuel from the pump chamber is fed to the engine cylinder via a pressure accumulator.
  • a common accumulator unit may be used for two or more cylinders.
  • the body part is provided with a pipe element housing the low pressure fuel line, and with ducts connecting the pipe element with the fuel chamber.
  • the pipe elements of the body parts of successive pump and tappet units may be connected to each other to provide a uniform low pressure fuel line.
  • reference numeral 1 indicates a body part of a pump and tappet unit which is mounted on an engine, for instance on its so called “console support” (not illustrated) by means of screw bolts 22.
  • Body part 1 encloses a tappet member 2 movable against the force of a compression spring 6 and to which a roll follower 4 is journalled by means of a stub shaft 3.
  • Tappet member 2 is governed in its axial movement in known manner by roll follower 4, which cooperates with a cam race 5 of a cam shaft of the engine (not shown).
  • a cover element 10 including a fuel chamber 11, is fixed to the body part 1 by means of screw bolts 27.
  • the fuel chamber 11 is arranged in cooperation with the piston member 8 so that the piston member 8 pumps fuel in the direction shown in Figures 1 and 2, from the chamber 11 through a non-return valve 15 and a duct 16 either directly or through a pressure accumulator into one or more cylinders of the engine (not shown).
  • pressure accumulators of known type, or, for example, to use accumulators of the type described and claimed in the applicants' earlier European Patent No.
  • the flange member 17 is provided with one or more lubrication ducts 18, which connect a ring-like lubricator groove 21 to a lubricator groove 19 encircling the tappet arm 7.
  • the flange member 17 is provided with a sealing ring 20. Any fuel and/or lubricant accumulating in a chamber 28 located above the flange member 17 is drained away through a drain duct 29 (Fig 3). It is thus possible to minimise the problem of fuel becoming mixed with the lubricant.
  • the body part 1 is provided with a pipe element la, having a duct 23 forming part of a fuel line 32 of a fuel feed system for the engine.
  • the fuel feed system comprises a low pressure pump 31, which pumps fuel from a fuel tank 30 to the pump and tappet units (for the sake of simplicity Figure 4 shows only the body parts 1), and pipes 33 connecting these units to one another through the pipe elements 1a.
  • the system also incorporates a constant pressure valve or a throttle valve 34, through which the fuel line 32 is led back into the fuel tank 30.
  • the tappet arm 7 connecting the tappet member 2 to the piston member 8 is somewhat differently constructed from that shown in Figs 1 and 2.
  • the tappet arm 7 may include two separate pieces, but these form one functional entity due to the action of spring 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)
  • Jet Pumps And Other Pumps (AREA)
  • Feeding And Controlling Fuel (AREA)
EP99305199A 1998-07-03 1999-07-01 Unité avec pompe et poussoir intégrés dans un système d'alimentation en carburant Expired - Lifetime EP0976926B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI981537A FI108071B (fi) 1998-07-03 1998-07-03 Integroitu pumppu- ja nostinyksikkö polttoaineensyöttöjärjestelmässä
FI981537 1998-07-03

Publications (3)

Publication Number Publication Date
EP0976926A2 true EP0976926A2 (fr) 2000-02-02
EP0976926A3 EP0976926A3 (fr) 2001-03-28
EP0976926B1 EP0976926B1 (fr) 2004-05-12

Family

ID=8552132

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99305199A Expired - Lifetime EP0976926B1 (fr) 1998-07-03 1999-07-01 Unité avec pompe et poussoir intégrés dans un système d'alimentation en carburant

Country Status (7)

Country Link
US (1) US6217299B1 (fr)
EP (1) EP0976926B1 (fr)
JP (1) JP4658278B2 (fr)
AT (1) ATE266809T1 (fr)
DE (1) DE69917150T2 (fr)
DK (1) DK0976926T3 (fr)
FI (1) FI108071B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1245803A1 (fr) 2001-03-30 2002-10-02 Gomecsys B.V. Moteur à combustion interne à taux de compression variable
EP1312793A1 (fr) * 2000-08-24 2003-05-21 Mitsubishi Denki Kabushiki Kaisha Dispositif d'alimentation en carburant haute pression
EP1277951A3 (fr) * 2001-07-19 2004-02-04 Hitachi, Ltd. Pompe à combustible haute pression pour moteurs à combustion interne
EP1489293A1 (fr) * 2003-06-20 2004-12-22 Delphi Technologies, Inc. Système à carburant
ITMI20091428A1 (it) * 2009-08-06 2011-02-07 Bosch Gmbh Robert Pompa di alta pressione per alimentare combustibile ad un motore a combustione interna
WO2011160908A1 (fr) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pompe, en particulier pompe à carburant haute pression
EP3071829A1 (fr) * 2013-11-22 2016-09-28 Renault S.A.S. Pompe d'injection de carburant a lubrification intégrée a l'axe de rotation du galet

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006170184A (ja) * 2004-11-16 2006-06-29 Denso Corp 高圧燃料ポンプ
CA2511254C (fr) * 2005-08-04 2007-04-24 Westport Research Inc. Compresseur de gaz haute pression et methode d'utilisation
WO2007083404A1 (fr) * 2006-01-20 2007-07-26 Bosch Corporation Système d'injection de carburant pour moteur à combustion interne
US20080230036A1 (en) * 2007-03-23 2008-09-25 Bauman William D Roller actuator for a mechanical fuel pump
JP4700708B2 (ja) * 2008-05-14 2011-06-15 ヤンマー株式会社 燃料噴射ポンプ
US7568461B1 (en) * 2008-06-20 2009-08-04 Gm Global Technology Operations, Inc. Tappet roller end shape for improved lubrication and combination with fuel pump and engine
JP5478051B2 (ja) * 2008-10-30 2014-04-23 日立オートモティブシステムズ株式会社 高圧燃料供給ポンプ
KR101028553B1 (ko) * 2008-11-25 2011-04-11 기아자동차주식회사 캠으로 구동하는 연료 펌프 윤활장치
EP2302194B1 (fr) 2009-07-08 2012-09-19 Delphi Technologies Holding S.à.r.l. Unité de pompe
EP2660459B1 (fr) * 2012-05-03 2016-04-06 Delphi International Operations Luxembourg S.à r.l. Réduction de charge
KR101428378B1 (ko) * 2013-04-05 2014-08-07 현대자동차주식회사 커먼레일 시스템용 고압펌프의 윤활장치
JP6311575B2 (ja) * 2014-11-07 2018-04-18 トヨタ自動車株式会社 燃料ポンプ
WO2018178501A1 (fr) 2017-03-29 2018-10-04 Wärtsilä Finland Oy Ensemble pompe à carburant haute pression pour moteur à piston à combustion interne
CN110691903B (zh) * 2017-03-29 2021-04-16 瓦锡兰芬兰有限公司 用于向内燃活塞发动机供应燃料的燃料泵
KR102216495B1 (ko) 2017-03-29 2021-02-16 바르실라 핀랜드 오이 내연 피스톤 기관에 연료를 공급하기 위한 연료 펌프
DE102020104313B3 (de) * 2020-02-19 2021-01-28 Schaeffler Technologies AG & Co. KG Stößel zur Beaufschlagung eines Pumpenkolbens einer Kraftstoffhochdruckpumpe

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US5701872A (en) * 1994-11-09 1997-12-30 Sanshin Kogyo Kabushiki Kaisha Vertical engine

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CA608638A (en) * 1960-11-15 Bendix-Westinghouse Automotive Air Brake Company Air compressor
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DE3000960A1 (de) * 1980-01-12 1981-09-10 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen, insbesondere fuer dieselmotoren
JPS57204461A (en) * 1981-06-11 1982-12-15 Kawakami Jishiyaku Kk Moving-magnet built-in type galvanometer
JPS57204461U (fr) * 1981-06-22 1982-12-25
GB2129883B (en) 1982-11-05 1985-10-09 Lucas Ind Plc Liquid fuel injection pump
DE3326045A1 (de) * 1983-07-20 1985-01-31 Robert Bosch Gmbh, 7000 Stuttgart Kraftstoffeinspritzpumpe fuer brennkraftmaschinen
DE4138290A1 (de) * 1991-11-21 1993-05-27 Kloeckner Humboldt Deutz Ag Brennkraftmaschine
JPH0649768U (ja) * 1992-12-14 1994-07-08 いすゞ自動車株式会社 内燃機関の燃料供給装置
JPH0712029A (ja) * 1993-06-24 1995-01-17 Mitsubishi Electric Corp 高圧燃料ポンプ
JPH07269444A (ja) * 1994-03-29 1995-10-17 Yamaha Motor Co Ltd 高圧燃料ポンプ
JPH07269443A (ja) * 1994-03-29 1995-10-17 Yamaha Motor Co Ltd 高圧燃料ポンプ
JP3199105B2 (ja) * 1994-06-24 2001-08-13 株式会社デンソー 高圧燃料供給ポンプ
DE19522306B4 (de) 1994-06-24 2004-08-26 Denso Corp., Kariya Hochdruck-Kraftstoffzuführungspumpe
JPH08121133A (ja) * 1994-10-21 1996-05-14 Yamaha Motor Co Ltd ２サイクル燃料噴射エンジン
JPH08261110A (ja) * 1995-03-22 1996-10-08 Zexel Corp 燃料噴射ポンプの潤滑装置
JPH0932617A (ja) * 1995-07-13 1997-02-04 Nissan Motor Co Ltd 火花点火式内燃機関
US5775203A (en) * 1997-01-28 1998-07-07 Cummins Engine Company, Inc. High pressure fuel pump assembly

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Publication number Priority date Publication date Assignee Title
US5701872A (en) * 1994-11-09 1997-12-30 Sanshin Kogyo Kabushiki Kaisha Vertical engine

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312793A4 (fr) * 2000-08-24 2006-06-21 Mitsubishi Electric Corp Dispositif d'alimentation en carburant haute pression
EP1312793A1 (fr) * 2000-08-24 2003-05-21 Mitsubishi Denki Kabushiki Kaisha Dispositif d'alimentation en carburant haute pression
EP1245803A1 (fr) 2001-03-30 2002-10-02 Gomecsys B.V. Moteur à combustion interne à taux de compression variable
US7665976B2 (en) 2001-07-19 2010-02-23 Hitachi, Ltd. High pressure fuel pump for internal combustion engine
EP1731751A1 (fr) * 2001-07-19 2006-12-13 Hitachi, Ltd. Pompe à combustible haute pression pour moteurs à combustion interne
EP1734252A3 (fr) * 2001-07-19 2007-01-03 Hitachi, Ltd. Pompe à combustible haute pression pour moteurs à combustion interne
EP1277951A3 (fr) * 2001-07-19 2004-02-04 Hitachi, Ltd. Pompe à combustible haute pression pour moteurs à combustion interne
WO2004113715A1 (fr) * 2003-06-20 2004-12-29 Delphi Technologies Inc. Systeme d'alimentation en carburant
EP1489293A1 (fr) * 2003-06-20 2004-12-22 Delphi Technologies, Inc. Système à carburant
US7509942B2 (en) 2003-06-20 2009-03-31 Delphi Technologies, Inc. Fuel system
ITMI20091428A1 (it) * 2009-08-06 2011-02-07 Bosch Gmbh Robert Pompa di alta pressione per alimentare combustibile ad un motore a combustione interna
WO2011160908A1 (fr) * 2010-06-24 2011-12-29 Robert Bosch Gmbh Pompe, en particulier pompe à carburant haute pression
EP3071829A1 (fr) * 2013-11-22 2016-09-28 Renault S.A.S. Pompe d'injection de carburant a lubrification intégrée a l'axe de rotation du galet

Also Published As

Publication number Publication date
JP2000064926A (ja) 2000-03-03
US6217299B1 (en) 2001-04-17
DE69917150T2 (de) 2004-09-02
DK0976926T3 (da) 2004-08-09
JP4658278B2 (ja) 2011-03-23
EP0976926B1 (fr) 2004-05-12
FI108071B (fi) 2001-11-15
FI981537A (fi) 2000-01-04
EP0976926A3 (fr) 2001-03-28
DE69917150D1 (de) 2004-06-17
FI981537A0 (fi) 1998-07-03
ATE266809T1 (de) 2004-05-15

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